Before you convert them to DXT3.. you could try removing the mips (again, using the tools DM includes) to see if this gives you an improvement. If that fails, you can always convert them to DXT3 and to be honest, there's not a great deal of degradation in quality and you'll get the benefit of much smaller files

Well I just had a look in the tail texture files and the colours are miles out!
Honestly, it's as if someone goes in and changes these things after they've been released.
The amount of time I spend checking these things, I must just see what I expect to see.